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Doppler physics

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https://www.readbyqxmd.com/read/28547739/determination-of-spermatic-vein-reflux-after-varicocele-repair-helps-to-define-the-efficacy-of-treatment-in-improving-sperm-parameters-of-subfertile-men
#1
S D'Andrea, A Micillo, A Barbonetti, A V Giordano, S Carducci, A Mancini, S Necozione, F Francavilla, S Francavilla
PURPOSE: A continuous spermatic venous reflux (SVR) at colour Doppler ultrasound (CDU) is an evidence for varicocele, a frequent correlate for male subfertility. We explored whether SVR after left varicocele repair is predictive for changes in semen quality in subfertile men. METHODS: Blood hormones (FSH, LH, and total testosterone) and scrotal CDU were obtained in subfertile patients with left grade II or grade III varicocele on physical evaluation and a poor sperm quality...
May 25, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28537347/adnexal-torsion-in-the-first-trimester-of-pregnancy-diagnosis-laparoscopic-management-and-review-of-the-literature
#2
Rafael Bras, Jorge Braga, António Tomé, Helder Ferreira
We report a case of an adnexal torsion in a 27-year-old woman in her 12th week of gestation. She presented with hypogastric and lumbar pain with biliary vomiting and nausea. Upon physical examination, tenderness in the right lower quadrant with rebound tenderness was apparent, and gynecological examination revealed right adnexal tenderness with absence of abnormal cervical discharge. The transvaginal ultrasonography demonstrated an enlarged cystic right ovary with no flow detected on color and power Doppler mode...
May 24, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28530770/diagnostic-value-of-appendicular-doppler-ultrasonography-in-acute-appendicitis
#3
Hüseyin Uzunosmanoğlu, Yunsur Çevik, Şeref Kerem Çorbacıoğlu, Emine Akıncı, Hakan Buluş, Kadir Ağladıoğlu
BACKGROUND: Acute appendicitis is one of the most common causes of acute abdominal pain prompting emergency department (ED) visits. It is critical for the physicians to promptly and accurately diagnose acute appendicitis. The present study aimed to evaluate the diagnostic efficacy of Doppler ultrasonography (USG) in patients with acute appendicitis and compare this new method with other commonly used radio-diagnostic tools. METHODS: All patients who were diagnosed with acute appendicitis at the Kecioren Training and Research Hospital ED and later underwent appendectomy between October 2012 and April 2013 were included in the study...
May 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28515592/inguinoscrotal-hernia-in-infants-three-case-reports-in-ultrasound-diagnosis
#4
Dharmraj Meena, Richa Jhuria, Sangeeta Saxena, Umesh Saini
An inguinal hernia occurs when an intestinal loop or part of the omentum or genital organs passes into the scrotal cavity or labia through an incompletely obliterated processus vaginalis. Inguinal hernias are most common in preterm neonates, especially at 32-weeks gestation. Content of hernia is mostly bowel and ovary/testicles. Presence of uterus in herniated sac is rare, and only few cases are reported in literature. Hernia is more frequently located on the right side because the right processus vaginalis closes later than the left...
January 2017: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28511233/-diagnostic-imaging-in-cases-of-acute-scrotum
#5
Natalie Ring, Gundula Staatz
Acute scrotum is one of the most common urologic emergencies in children and adolescents. This condition involves acute testicular pain, which is often accompanied by scrotal swelling and erythema. It is most important to distinguish between cases that require immediate surgery and those that can be treated conservatively. As patient history and physical findings may not always be unequivocal, ultrasound with Colour-Coded Doppler Sonography is the imaging modality of choice for further evaluation. Testicular torsion and other differential diagnoses such as epididymitis, appendiceal torsion, intratesticular haematoma after trauma, or complicated inguinal hernia have to be considered...
May 16, 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28493799/shear-wave-elastography-basic-physics-and-musculoskeletal-applications
#6
Mihra S Taljanovic, Lana H Gimber, Giles W Becker, L Daniel Latt, Andrea S Klauser, David M Melville, Liang Gao, Russell S Witte
In the past 2 decades, sonoelastography has been progressively used as a tool to help evaluate soft-tissue elasticity and add to information obtained with conventional gray-scale and Doppler ultrasonographic techniques. Recently introduced on clinical scanners, shear-wave elastography (SWE) is considered to be more objective, quantitative, and reproducible than compression sonoelastography with increasing applications to the musculoskeletal system. SWE uses an acoustic radiation force pulse sequence to generate shear waves, which propagate perpendicular to the ultrasound beam, causing transient displacements...
May 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28467568/-leriche-syndrome
#7
Serdar Demirgan, Abdullah Tolga Şitilci, Sezen Solak, Mehmet Salih Sevdi, Kerem Erkalp, Emin Köse
Leriche syndrome is a disease characterized by thrombotic occlusion in the aorta, frequently in the distal renal artery. Classic symptoms of this syndrome include pain in the lower extremities emerging during activity (claudication), impalpability of femoral pulses, and impotency in male patients. Definitive diagnosis of claudication due to insufficient circulation as well as claudication that is neurogenic in origin, is difficult. Medical history, physical examination, and monitoring methods are important for definitive diagnosis...
January 2017: Aǧrı: Ağrı (Algoloji) Derneği'nin Yayın Organıdır, the Journal of the Turkish Society of Algology
https://www.readbyqxmd.com/read/28460711/application-of-shortwave-diathermy-to-lower-limb-increases-arterial-blood-flow-velocity-and-skin-temperature-in-women-a-randomized-controlled-trial
#8
Natanael Teixeira Alves De Sousa, Elaine Caldeira De Oliveira Guirro, João Guilherme Calió, Mariane Cristina De Queluz, Rinaldo Roberto De Jesus Guirro
BACKGROUND: Shortwave diathermy (SWD) and microwave diathermy (MWD) are frequently used by physical therapists to treat musculoskeletal conditions. The therapeutic benefits are usually associated with an increase in tissue temperature; however, there is no consensus on the changes in blood flow. OBJECTIVES: 1) To evaluate the behavior of temperature and arterial blood flow after the application of SWD and MWD to the lower limb of healthy women aged 18-30 and 2) to assess whether changes in limb positioning can influence SWD response...
March 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28457379/electrospun-phea-pla-pcl-scaffold-for-vascular-regeneration-a-preliminary-in%C3%A2-vivo-evaluation
#9
S Buscemi, V D Palumbo, A Maffongelli, S Fazzotta, F S Palumbo, M Licciardi, C Fiorica, R Puleio, G Cassata, L Fiorello, G Buscemi, A I Lo Monte
BACKGROUND: There is increasing interest in the development of vessel substitutes, and many studies are currently focusing on the development of biodegradable scaffolds capable of fostering vascular regeneration. We tested a new biocompatible and biodegradable material with mechanical properties similar to those of blood vessels. METHODS: The material used comprises a mixture of α,β-poly(N-2-hydroxyethyl)-d,l-aspartamide (PHEA) and polylactic acid (PLA), combined with polycaprolactone (PCL) by means of electrospinning technique...
May 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28426903/the-therapeutic-efficacy-of-botulinum-toxin-in-treating-scleroderma-associated-raynaud-s-phenomenon-a-randomized-double-blind-placebo-controlled-clinical-trial-assessing
#10
Ricardo J Bello, Carisa M Cooney, Eitan Melamed, Keith Follmar, Gayane Yenokyan, Gwendolyn Leatherman, Ami A Shah, Fredrick M Wigley, Laura K Hummers, Scott D Lifchez
Objective To assess the therapeutic efficacy of local injections with Botulinum Toxin Type-A (Btx-A) in improving blood flow to the hands of patients with Raynaud's Phenomenon (RP) secondary to scleroderma. Methods In this randomized, double-blind, placebo-controlled clinical trial (http://ClinicalTrials.gov #NCT02165111), patients with scleroderma-associated RP received Btx-A (50 units in 2.5 mL) in one randomly selected hand and sterile saline (2.5 mL) in the opposite hand. Follow-up at 1 and 4 months post-injection included Laser Doppler Imaging (LDI) of hands, patient-reported outcomes, and physical exam...
April 20, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28425258/assessment-of-developmental-and-radiological-long-term-outcomeof-children-with-surgically-treated-midgut-volvulus
#11
Ahmet Murat Çakmak, Özlem Boybeyi Türer, Gülnur Göllü Bahadir, Bilge Türedi, Ufuk Ateş, Adalet Elçin Yildiz, Gönül Küçük, Ömer Suat Fitöz, Betül Ulukol, Mustafa Kemal Aslan, Tutku Soyer, Hüseyin Dindar
BACKGROUND/AIM: The aim is to evaluate the long-term outcome of asymptomatic patients who underwent surgical correction for midgut volvulus. MATERIALS AND METHODS: Seven patients managed surgically for midgut volvulus in the last 3 years were included. Demographic features, symptoms at presentation, diagnoses, surgical procedures, and complications were recorded. Patients were then contacted for follow-up and evaluation of long-term outcomes. General physical conditions, anthropometric parameters, feeding habits, and defecation histories were evaluated...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28424505/usefulness-of-serum-fetuin-a-level-as-a-marker-of-erectile-dysfunction
#12
W Kandeel, W El-Shaer, A Sebaey, A A Abou-Taleb, A Fathy, B Elmohamady, A I Mansour
This study aimed to evaluate the correlation between serum levels of fetuin-A and the presence and severity of erectile dysfunction (ED) in Egyptian population. The study was performed on 60 ED patients and 20 age-matched healthy controls. A comprehensive medical history and complete physical examination were obtained and performed in all participants. ED and its severity were assessed via International Index of Erectile Function (IIEF-5). Doppler ultrasound, fasting blood glucose level, complete lipid profile, serum total testosterone (TT) and serum fetuin-A were performed...
April 20, 2017: International Journal of Impotence Research
https://www.readbyqxmd.com/read/28415162/value-of-doppler-evaluation-of-physically-abnormal-fistula-hemodynamic-guidelines-and-access-outcomes
#13
Seong Cho, Yu-Ji Lee, Sung-Rok Kim
Background/Aims: The strategy of access care at out center involves the use of ultrasound (USG) in case of physical examination (PE) abnormality. USG determines the need of angiography. This study investigated the possible association between the need for percutaneous transluminal angioplasty (PTA) and hemodynamic parameters of USG. The study also assessed the effects of this monitoring strategy on outcomes in comparison with a historical control. Methods: A retrospective study of the medical records of 127 patients (65 PTA, 62 non-PTA) was conducted...
April 18, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28414667/the-mysterious-case-of-dyspnea
#14
S Saad, N Turaga, J Grant, N Jain
INTRODUCTION: Dehiscence of a mitral valve annuloplasty ring is a rare occurrence that often manifests as mitral regurgitation and heart failure. We present a case of mitral ring dehiscence which was initially unrecognized by standard 2-dimensional transthoracic echocardiography (2D TTE); and 2-dimensional transesophageal echocardiography (2D TEE);. CASE: A 65-year-old woman was referred to Cardiology clinic for evaluation of dyspnea. Her history included tobacco abuse, atrial fibrillation status post pulmonary vein isolation, nonischemic cardiomyopathy, and prior mitral valve repair with annuloplasty ring for rheumatic valvular disease...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28397385/reduced-physical-activity-in-pregnancy-reduces-maternal-vascular-resistance-and-improves-fetal-growth
#15
Barbara Vasapollo, Damiano Lo Presti, Giulia Gagliardi, Daniele Farsetti, Grazia Maria Tiralongo, Ilaria Pisani, Gian Paolo Novelli, Herbert Valensise
OBJECTIVE: To test the efficacy of maternal activity restriction in normotensive patients with TVR in the upper limits, evaluating the effect on fetal growth. METHODS: Thirty women were enrolled between 27 and 29 weeks gestation. All patients met the following criteria: normal blood pressure values before and during pregnancy, TVR between 1300 and 1400 dyne sec(-1) cm(-5) , normal fetal Doppler parameters at enrolment, abdominal circumference between the 10th and 25th centile...
April 11, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28388147/two-photon-absorption-line-strengths-for-nitric-oxide-comparison-of-theory-and-sub-doppler-laser-induced-fluorescence-measurements
#16
Waruna D Kulatilaka, Robert P Lucht
We discuss the results of high-resolution, sub-Doppler two-photon-absorption laser-induced fluorescence (TPALIF) spectroscopy of nitric oxide at low pressure and room temperature. The measurements were performed using the single-longitudinal mode output of a diode-laser-seeded optical parametric generator (OPG) system with a measured frequency bandwidth of 220 MHz. The measurements were performed using a counter-propagating pump beam geometry, resulting in sub-Doppler TPALIF spectra of NO for various rotational transitions in the (0,0) vibrational band of the A(2)Σ(+) - X(2)Π electronic transition...
March 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28344526/delayed-repair-of-ulnar-artery-at-the-distal-forearm
#17
Jorge G Boretto, Ezequiel Zaidenberg, Gerardo L Gallucci, Verónica Alfie, Pablo De Carli
Background:The purpose of this study was to evaluate the rate of patency after delayed repair of the ulnar artery following primary ligation. Methods: Adult patients with primary ligation of the injured ulnar artery at the forearm who had a delayed repair of the artery were included. Postoperative arterial patency was determined by either physical examination or color Doppler ultrasonographic imaging. Postoperative complications and Disabilities of the Arm, Shoulder and Hand score were recorded. Results: Eight consecutive patients during a 3-year period were included...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28340403/micro-and-macrovascular-function-in-children-with-sickle-cell-anaemia-and-sickle-cell-haemoglobin-c-disease
#18
Berenike Möckesch, Keyne Charlot, Stéphane Jumet, Marc Romana, Lydia Divialle-Doumdo, Marie-Dominique Hardy-Dessources, Marie Petras, Benoît Tressieres, Vanessa Tarer, Olivier Hue, Maryse Etienne-Julan, Philippe Connes, Sophie Antoine-Jonville
It is unclear whether vascular function is affected similarly in children with sickle cell anaemia (SS) and children with sickle haemoglobin C (SC) disease. Therefore, we compared micro and macrovascular functions in healthy (AA) children, children with SS and SC disease, and assessed their association with physical activity. Participants (24 SS, 22 SC and 16 AA), were compared in terms of 1) thermal hyperaemic response (finger pad warming to 42°C) measured by Laser Doppler techniques, 2) arterial stiffness determined by pulse wave velocity, 3) daily energy expenditure related to moderate and intense physical activities estimated by questionnaire and 4) fitness level, evaluated by the six-minute walk test...
February 4, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28332295/advanced-cardiovascular-imaging-in-williams-syndrome-abnormalities-usefulness-and-strategy-for-use
#19
Jordan A Hills, Yuri A Zarate, Noelle R Danylchuk, Tiffany Lepard, Jean Chi-Jen Chen, Ronnie Thomas Collins
Extracardiac arterial stenoses are not uncommon in Williams syndrome (WS); however, data on the utility of advanced cardiovascular imaging (CVI) to assess these stenoses are lacking. We retrospectively reviewed the frequency, indication, and diagnostic outcomes of CVI modalities performed in patients with WS evaluated at a single institution between 2001 and 2014. Data were collected and analyzed from 34 patients (56% female) who underwent CVI during the study period. The median age was 10 years (range 1.8-33 years)...
May 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28330548/-polyorchidism-is-a-rare-cause-of-a-scrotal-mass
#20
Grete Padkær, Bassam Hamid Mahdi, Poul Erik Andersen, Lars Lund
In this case report we present a 14-year-old boy with two testicles in the right hemiscrotum - a case of polyorchidism. He did not have surgery for his condition, and his condition was followed according to the guidelines. In a study, 6.4% of cases with polyorchidism were found to contain neoplasms of which the most were malignant. If the supernumerary testicle is not contributing to the spermatogenesis, it is therefore recommended to remove the testicle. Otherwise, recommendations are a yearly follow-up by Doppler ultrasound, including a physical examination to discover development of cancer...
March 20, 2017: Ugeskrift for Laeger
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